Tissue puncture closure device with automatic torque sensing...

A - Human Necessities – 61 – B

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A61B 17/00 (2006.01) A61B 19/00 (2006.01)

Patent

CA 2687168

Methods and apparatus for sealing a puncture or incision formed percutaneously in tissue separating two internal portions of the body of a living being with an anchor, a sealing plug and a filament connecting the anchor and sealing plug are disclosed. The methods and apparatus provide for automatic tamping of the sealing plug. In addition, torque required to tamp the sealing plug is automatically sensed and gear ratios of an automatic tamping device are automatically changed in response to sensed changes in torque. A planetary transmission may be used to automatically change gear ratios in response to the changes in torque.

L'invention concerne des procédés et des appareils permettant de fermer hermétiquement une perforation ou une incision formée de façon percutanée dans un tissu séparant deux parties internes du corps d'un être vivant, au moyen d'un ancrage, d'un bouchon mâle et d'un filament reliant l'ancrage et le bouchon mâle. Les procédés et appareils permettent un tassement automatique du bouchon mâle. De plus, le couple requis pour tasser le bouchon mâle est automatiquement détecté et des rapports de démultiplication d'un dispositif de tassement automatique sont automatiquement changés en réponse aux changements détectés du couple. Une transmission planétaire peut être utilisée pour changer automatiquement les rapports de démultiplication en réponse aux changements du couple.

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